gyral vs vertiginous

gyral

adj
  • Moving circularly or spirally; gyratory; whirling. 

  • Of or pertaining to a gyrus 

vertiginous

adj
  • Revolving; rotating; rotatory. 

  • Inducing a feeling of giddiness, vertigo, dizziness or of whirling. 

  • Having an aspect of great depth, drawing the eye to look downwards. 

  • Pertaining to vertigo (in all its meanings). 

How often have the words gyral and vertiginous occurred in a corpus of books? (source: Google Ngram Viewer )